240220640626 has 4 divisors (see below), whose sum is σ = 360330960942. Its totient is φ = 120110320312.

The previous prime is 240220640593. The next prime is 240220640633. The reversal of 240220640626 is 626046022042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 238875585001 + 1345055625 = 488749^2 + 36675^2 .

It is a junction number, because it is equal to n+sod(n) for n = 240220640591 and 240220640600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055160155 + ... + 60055160158.

Almost surely, 2^240220640626 is an apocalyptic number.

240220640626 is a deficient number, since it is larger than the sum of its proper divisors (120110320316).

240220640626 is a wasteful number, since it uses less digits than its factorization.

240220640626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120110320315.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 240220640626 its reverse (626046022042), we get a palindrome (866266662668).

The spelling of 240220640626 in words is "two hundred forty billion, two hundred twenty million, six hundred forty thousand, six hundred twenty-six".